BTA08 BW/CW and BTB08 BW/CW are bidirectional controllable silicon controlled rectifiers launched by Schneider Electric. These products have high switching characteristics, high surge currents and high off-state voltages. They are suitable for various switching power supplies and inverters.
This document provides technical specifications for the BTA/BTB08 BW/CW triac family, which utilizes glass passivated chip technology. These snubberless devices are designed for phase control and static switching applications on inductive or resistive loads without requiring an RC network.
The datasheet details absolute ratings including RMS on-state current up to 8A and non-repetitive surge peak currents of 80A. It also covers electrical characteristics such as gate trigger current, holding current, and thermal resistance values for both DC and AC conduction angles.
| RMS on-state current (IT(RMS)) | 8 A |
|---|---|
| Non repetitive surge peak on-state current (ITSM) | 85 A |
| Critical rate of rise of on-state current (di/dt)c | > 7A/ms |
| Surge current capability (Itsy) | 80A |
| Insulating voltage (UL recognized) | 2500V(Rus) |
| Repetitive peak off-state voltage (VDRM/VRRM) | 400 to 800 V |
| Junction to ambient thermal resistance (Rth j-a) | 60 °C/W |
The device supports a high commutation capability with (di/dt)c greater than 7A/ms without a snubber.
The maximum non-repetitive surge peak on-state current is 85 A when tp = 8.3 ms and Tj initial = 25°C.
The available repetitive peak off-state voltages (VDRM/VRRM) range from 400 V to 800 V.